Nut-lock.



A. ORZBGHOWSKI.

NUT LOCK. APPLICATION FILED JAN. 15.1913.

Patented Nov. 4, 1913;

m W m N I am;

rinrrnn STATES PA EN OFFICE.

ANTONI onznonowsxi, or SVTAMFORDQCONNEGTICUT.

Application filed January 15, 1913. Serial No. 742,237.

To all whom it may concern: I Be it known that I, AN'roNI ORZnoi-Iowsiu, citizen of the United States, residing at Stamford, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification. I

This invention relates to improvements in nut locks and has forone of its objects to simplify and improve the construction and increase the efficiency and utility of devices of this character. v Another object of the invention is to pro vide a simply constructed device which may be readily applied to bolts and nuts of vari-.

ous sizes and to bolts and nuts employed for various purposes.

Another object of the invention is to provide a simply constructed device whereby the nut maybe readily released when it is to be removed, but will be firmly held from retrograde movement when the device is applied. I

\Vith these and other objects in view the invention consists in certain novel features of construction as hereafter shown and de scribed, and then specifically pointed out in the claims, and in the drawings illustrative of the preferred embodiment of the invention.

Figure 1 is a plan view of the improved nut. Fig. 2 is a section on the line 2-2 of Fig. 1. Fig. 3 is a perspective view of the improved nut from beneath. Fig. a is a perspective view of the improved washer from above. Fig. 5 is a detached perspective view of the spring actuated holding pawl.

Corresponding and like parts are referred to in the following description and indicated in all the views of the accompanying drawing by the same reference characters.

The bolt employed in connection with the improved device is represented conventionally at 10 and the nut at 11. The bolt is provided with a recess 12 extending longitudinally within the threaded portion and transversely of the threads, as shown. The nut 11 is provided with an annular recess 13 in its inner face and surrounding the threaded aperture and with ratchet teeth 14 in the walls of the annular recess. Bearing upon the inner face of the nut 11, and between the nut and the structure through which the bolt passes, is a washer 16 having an aperture slightly larger than the outer circumference of the threaded portion of the Specification of Letters Patent.

Patented NOVA, 1913.

bolt and )rovided with one or more radial recesses 1 corresponding to and adapted to register with one of the teeth of the 'nut-' recess.- One of the apertures 17 only is requiredto enable the washer to be employed,

but to' avoid the necessity for rotatingthe washerto its fully distance around the belt, a plurality of the recesses are employed as sh'ownin Fig. 1. i

The nut 11 may be of any desired form either hexagonal or square, but for the purpose of illustration is shown square, and the washer 16 is shown eight-sided, four of the sides adapted to correspond with the side faces of the nut when the latter is in one position and the remaining four sides adapted to correspond with the sides of the nut when p the washer is rotated one-eighth of a revolution. By this arrangement the location of the washer is facilitated. The recesses 17 are located midway of four of the sides of the washer, while the segmental portions of the aperture of the washer are located op posite the remaining flat faces of the washer, the object to be hereafter explained.

Fitting within the recess 12 of the bolt is a pawl device represented as a whole at 18 and extending into the toothed recess of the nut and likewise extending into one of the recesses 17 of the washer when the lat ter is locatedwith the recess 17 registering with one of the teeth of the'recess in thenut.

.The pawl 18 is provided with aproj'ection 19 having one face inclined obliquely to the longitudinal plane of the bolt. Fitting within'the'recess 12 adjacent to the pawl 18 is a block 20 having a projection 21 which overlaps the projection 19 and is formed with one face correspondingly inclined or oblique thereto, as shown in Figs. 2 and 5.

A spring 22 is connected to the pawl 18 and the block 20 and operates to maintain the pawl yieldably in engagement with the teeth of the recess 13. One face of each of the teeth 14: extends radially of the bolt opening of the nut 11 while the other face extends tangentially of the bolt opening, and thus lock the nut in position relative to the bolt 10.

When it is desired to remove'the nut, a suitable implement is inserted to move the block 20 inwardly to release the pawl 18 to a sufficient extent to enable the main nut to be p backed off slightly to loosen the binding effect of the nut. The washer 16 is then rotated a part of arevolution to cause the nearest segmental portion of the interior of be used re aeatedl as 110 )art is in'ured or destroyed during its operation.

above the upper face of thenut 11 so that a suitable implement maybe inserted to force the block 20inwardly and cause-its projection 21 to engage the corresponding projection 19 ofthe pawl lS and move the latter inwardly therewith and release it from'the ratchet teeth.

The improved device is simple in construction, can be inexpensively manufactured and applied to bolts and nuts of various sizes and forms.

Having thus described the invention what is claimed as new is '1. In a lock'nut, a bolt having alongitudinal recess in'its threadedportiom-a nut-engaging thethreaded portion o-fthe bolt and provided with an annular't'oothed-recess in one face, a spring actuated pawl-operating in said longitudinal bolt recess and engaging the teeth of the nut recess and extending beyond the recessed faceofthe nut,-and a releasing washer bearing against the recessedface of the nut and with aradial re cess registering when in one position with one of theteethofthenut recess to receive the pawl when the sameis engaged with the said spaces betweentwoof the'teeth.

2. In a lock-nut, a bolt having-a longitudinal recess in its threaded portion, a nut engaging the threaded portion of the bolt and provided with an annular toothed recess-in one face, a spring within said bolt-recess,

a pawl engagedby said spring and engagand overlapping said pawl and adapted to release the same from the teeth of the recess when forced inwardly.

3. IIlfl/"lOCk-Illlij, a bolt having a longitudinal recess in its threaded portion, a nut The recess 12 extends at its upper end engaging the threaded portion of the bolt and provided with an annular toothed recess in one face, a spring within said boltreces s a pawl connected to said spring and engaging the teeth of the said nut-recess one atatime and formed with a, projection at one end with the outer face of the projection inclined to the longitudinal plane of the pawl, and ablook connectedto said spring and engaging'in said bolt-recess andprovided with aproject-ion having one inclined face corresponding to andoverlapping the inclined face of the pawl projection.

,4. In a lock-nut, a bolt having a longitudinal recess in its threaded portion, a nut engaging thethreaded portion of the bolt and provided with an annular toothed recess in one face, a spring within said bolt-recess, a pawl connected to said springand engaging in .said nut-recess, and a releasing washer bearing against the recessed face of the nut and with a radial recess registering when in one ,position with one of the teeth of the nut-recess to receive the pawl when the same is engaged with -said:spaces between two ofthe teeth.

In testimony whereofl aflix my signature in presence of two witnesses.

; ANTQNI ORZEGHOVVSKI. [11.- 5.] d/Vitnesses W. MrRoN TEED, 5E. N. FAsT.

icopiesof'th'is patent :mayibe obtained .for five cents each, -hy;alddressing the Commissionerof-Patents,

"Washington, -D.- C. 

